Pinning cloth to moving model
Select the cloth. Enter Weight paint mode with CtrlTab, assign weights of 1 to the vertices you want to pin (paint with brush these vertices red)
In cloth physics settings, check 'pinning' and select the vertex group
Then enter Object mode with CtrlTab. Make sure to select the cloth first and then the object you want to pin on.
Parent the cloth to the object with CtrlP and select 'Set parent to object'